c# - 从 DetailsView 中检索数据

Question

我正在尝试从 DetailsView 控件中检索数据，以便将它们输入到另一个数据库表中。我查看了其他人提出的其他问题，但他们的问题都不适合我的情况，即试图访问 SQL 数据库。最终，我找不到我需要的答案。

基本上，我的代码目标是提取 DetailsView 的第二行，因为第一行主要是不会更改的静态 header 。我的 DetailsView 会在选择上面的 GridView 时发生变化。因此，我试图检索第二行的数据，解释我对 Rows[2] 的用法，同时我假设“Cells[]”指的是列。

我正在使用以下代码来执行此操作。

string insertQuery = "insert into SalesOrders ([pQuotation#], pServices, pQty, pDescription, [p[Price/Unit]], pNetvalue, pProgress, pClientNo values (@quotationno,@services,@quantity,@description,@priceperunit,@netvalue,@progress,@clientno)";
cmd = new SqlCommand(insertQuery, con)

        cmd.Parameters.AddWithValue("@quotationno", DetailsView1.Rows[0].Cells[1].Text);   
        cmd.Parameters.AddWithValue("@services", DetailsView1.Rows[1].Cells[1].Text);
        cmd.Parameters.AddWithValue("@quantity", DetailsView1.Rows[2].Cells[1].Text);
        cmd.Parameters.AddWithValue("@description", DetailsView1.Rows[3].Cells[1].Text);
        cmd.Parameters.AddWithValue("@priceperunit", DetailsView1.Rows[4].Cells[1].Text);
        cmd.Parameters.AddWithValue("@netvalue", DetailsView1.Rows[5].Cells[1].Text);
        cmd.Parameters.AddWithValue("@progress", "0%");
        cmd.Parameters.AddWithValue("@clientno", clientnolbl.Text.ToString());

我被抛出以下异常:

Error:System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values. Parameter name: index at System.Web.UI.ControlCollection.get_Item(Int32 index) at RealClientPurchase.Button1_Click(Object sender, EventArgs e) in d:\Desktop\RealClientPurchase.aspx.cs:line 27 

编辑:这是文件背后的代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;

public partial class RealClientPurchase : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        clientnolbl.Text = Session["sClientNo"].ToString();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection(@"Data Source=(LocalDB)\v11.0;AttachDbFilename=D:\Desktop\TemporarySter\App_Data\legitdatabase.mdf;Integrated Security=True;Connect Timeout=30");
        try
        {
            con.Open();

            SqlCommand cmd;
            string insertQuery = "insert into SalesOrders ([pQuotation#], pServices, pQty, pDescription, [p[Price/Unit]], pNetvalue, pProgress, pClientNo values (@quotationno,@services,@quantity,@description,@priceperunit,@netvalue,@progress,@clientno)";
            cmd = new SqlCommand(insertQuery, con);



        cmd.Parameters.AddWithValue("@quotationno", DetailsView1.Rows[0].Cells[1].Text);   
        cmd.Parameters.AddWithValue("@services", DetailsView1.Rows[1].Cells[1].Text);
        cmd.Parameters.AddWithValue("@quantity", DetailsView1.Rows[2].Cells[1].Text);
        cmd.Parameters.AddWithValue("@description", DetailsView1.Rows[3].Cells[1].Text);
        cmd.Parameters.AddWithValue("@priceperunit", DetailsView1.Rows[4].Cells[1].Text);
        cmd.Parameters.AddWithValue("@netvalue", DetailsView1.Rows[5].Cells[1].Text);
        cmd.Parameters.AddWithValue("@progress", "0%");
        cmd.Parameters.AddWithValue("@clientno", clientnolbl.Text.ToString());


            ScriptManager.RegisterStartupScript(this, this.GetType(), "redirect",
                "alert('Purchase order has been submitted! Kindly proceed to checkout.'); window.location='" +
                Request.ApplicationPath + "CurrentCheckout.aspx';", true);

            con.Close();
        }
        catch (Exception ex)
        {
            Response.Write("Error:" + ex.ToString());

        }
    }
}

这些是 aspx 代码:

<%@ Page Title="" Language="C#" MasterPageFile="~/ClientPortal.master" AutoEventWireup="true" CodeFile="RealClientPurchase.aspx.cs" Inherits="RealClientPurchase" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:Register1ConnectionString %>" SelectCommand="SELECT [qQuotationNo], [qServices], [qQuantity], [qDate] FROM [Quotations] WHERE ([qClientNo] = @qClientNo)">
        <SelectParameters>
            <asp:SessionParameter Name="qClientNo" SessionField="sClientNo" Type="Int32" />
        </SelectParameters>
    </asp:SqlDataSource>
    <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:Register1ConnectionString %>" SelectCommand="SELECT [qQuotationNo], [qServices], [qQuantity], [qDescription], [qPricePerQty], [qTotalPayable] FROM [Quotations] WHERE ([qQuotationNo] = @qQuotationNo)">
        <SelectParameters>
            <asp:ControlParameter ControlID="GridView1" Name="qQuotationNo" PropertyName="SelectedValue" Type="Int32" />
        </SelectParameters>
    </asp:SqlDataSource>
    <asp:Label ID="clientnolbl" runat="server" Text="Label" Visible="False"></asp:Label>
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="qQuotationNo" DataSourceID="SqlDataSource1" Height="125px" Width="452px" CellPadding="4" ForeColor="#333333" GridLines="None">
        <AlternatingRowStyle BackColor="White" />
        <Columns>
            <asp:CommandField ShowSelectButton="True" />
            <asp:BoundField DataField="qQuotationNo" HeaderText="Quotation No" InsertVisible="False" ReadOnly="True" SortExpression="qQuotationNo" />
            <asp:BoundField DataField="qServices" HeaderText="Services" SortExpression="qServices" />
            <asp:BoundField DataField="qQuantity" HeaderText="Quantity" SortExpression="qQuantity" />
            <asp:BoundField DataField="qDate" HeaderText="Date" SortExpression="qDate" />
        </Columns>
        <EditRowStyle BackColor="#2461BF" />
        <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
        <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
        <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
        <RowStyle BackColor="#EFF3FB" />
        <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
        <SortedAscendingCellStyle BackColor="#F5F7FB" />
        <SortedAscendingHeaderStyle BackColor="#6D95E1" />
        <SortedDescendingCellStyle BackColor="#E9EBEF" />
        <SortedDescendingHeaderStyle BackColor="#4870BE" />
    </asp:GridView>
    <asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataSourceID="SqlDataSource2" Height="50px" Width="452px" CellPadding="4" ForeColor="#333333" GridLines="None" DataKeyNames="qQuotationNo">
        <AlternatingRowStyle BackColor="White" />
        <CommandRowStyle BackColor="#D1DDF1" Font-Bold="True" />
        <EditRowStyle BackColor="#2461BF" />
        <FieldHeaderStyle BackColor="#DEE8F5" Font-Bold="True" />
        <Fields>
            <asp:BoundField DataField="qQuotationNo" HeaderText="qQuotationNo" SortExpression="qQuotationNo" InsertVisible="False" ReadOnly="True" />
            <asp:BoundField DataField="qServices" HeaderText="qServices" ReadOnly="True" SortExpression="qServices" />
            <asp:BoundField DataField="qQuantity" HeaderText="qQuantity" SortExpression="qQuantity" ReadOnly="True" />
            <asp:BoundField DataField="qDescription" HeaderText="qDescription" SortExpression="qDescription" ReadOnly="True" />
            <asp:BoundField DataField="qPricePerQty" HeaderText="qPricePerQty" SortExpression="qPricePerQty" ReadOnly="True" />
            <asp:BoundField DataField="qTotalPayable" HeaderText="qTotalPayable" SortExpression="qTotalPayable" ReadOnly="True" />
        </Fields>
        <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
        <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
        <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
        <RowStyle BackColor="#EFF3FB" />
    </asp:DetailsView>
    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<asp:Button ID="Button1" runat="server" Text="Submit" OnClick="Button1_Click" />
    <br />
    <br />
    <br />
</asp:Content>

Answer 1

我找到了解决方案。

我更改了数据库表中的字段以排除“#”和“[”或“]”看起来这些标志在 SQL 语句中不起作用。修改后的代码如下，它们确实有效。

SqlCommand cmd;
            string insertQuery = "INSERT INTO SalesOrders (pQuotationNo, pServices, pQty, pDescription, pPricePerQty, pNetvalue, pProgress, pClientNo) values (@quotationno,@services,@quantity,@description,@priceperunit,@netvalue,@progress,@clientno)";
            cmd = new SqlCommand(insertQuery, con);


            cmd.Parameters.AddWithValue("@quotationno", DetailsView1.Rows[0].Cells[1].Text.ToString());   
            cmd.Parameters.AddWithValue("@services", DetailsView1.Rows[1].Cells[1].Text.ToString());
            cmd.Parameters.AddWithValue("@quantity", DetailsView1.Rows[2].Cells[1].Text.ToString());
            cmd.Parameters.AddWithValue("@description", DetailsView1.Rows[3].Cells[1].Text.ToString());
            cmd.Parameters.AddWithValue("@priceperunit", DetailsView1.Rows[4].Cells[1].Text.ToString());
            cmd.Parameters.AddWithValue("@netvalue", DetailsView1.Rows[5].Cells[1].Text.ToString());
            cmd.Parameters.AddWithValue("@progress", "0%");
            cmd.Parameters.AddWithValue("@clientno", clientnolbl.Text.ToString());
            cmd.ExecuteNonQuery();